12L 7s

This MOS divides its twelve large steps 2-2-2-1-2-2-1 like the familiar 12edo diatonic scale. The perfect fourth which generates it measures 5/12edo (500) to 8/19edo (505.263 cents).

5/12					500
				28/67	501.4925
			23/55		501.818
				41/98	502.041
					502.237
		18/43			502.326
					502.524
				49/117	502.564
					502.603
			31/74		502.703
				44/105	502.857
	13/31				503.226
				47/112	503.429
					503.599
			34/81		503.704
					503.7855
				55/131	503.817
					583.8685
		21/50			504
				50/119	504.202
			29/69		504.348
				37/88	504.5455
8/19					505.263